osfmk/vm/cpm.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  *
  25  */
  26
  27 #ifndef _VM_CPM_H_
  28 #define _VM_CPM_H_
  29
  30 /*
  31  *      File:   vm/cpm.h
  32  *      Author: Alan Langerman
  33  *      Date:   April 1995 and January 1996
  34  *
  35  *      Contiguous physical memory allocator.
  36  */
  37
  38 #include <mach_kdb.h>
  39 #include <mach_counters.h>
  40
  41 /*
  42  *      Return a linked list of physically contiguous
  43  *      wired pages.  Caller is responsible for disposal
  44  *      via cpm_release.
  45  *
  46  *      These pages are all in "gobbled" state when .
  47  */
  48 extern kern_return_t
  49         cpm_allocate(vm_size_t size, vm_page_t *list, boolean_t wire);
  50
  51 /*
  52  *      CPM-specific event counters.
  53  */
  54 #define VM_CPM_COUNTERS         (MACH_KDB && MACH_COUNTERS && VM_CPM)
  55 #if     VM_CPM_COUNTERS
  56 #define cpm_counter(foo)        foo
  57 #else   /* VM_CPM_COUNTERS */
  58 #define cpm_counter(foo)
  59 #endif  /* VM_CPM_COUNTERS */
  60
  61 #endif  /* _VM_CPM_H_ */